| 西藏甲马铜多金属矿床金的叠加成矿 |
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| 引用本文： | 任云生,粟登逵,张金树.西藏甲马铜多金属矿床金的叠加成矿[J].吉林大学学报(地球科学版),2002,32(3):225-228. |
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| 作者姓名： | 任云生 粟登逵 张金树 |
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| 作者单位： | 1. 吉林大学地球科学学院,吉林,长春,130061
2. 西藏地质六队,西藏,堆龙德庆,851400 |
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| 基金项目： | 吉林大学校科研和教改项目;2000; |
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| 摘 要： | 甲马铜多金属矿床各类矿石中金含量普遍较高。层次主矿体中金主要以细小的自然金形式包裹于斑铜矿和黝铜矿中。矿区多底沟组大理岩（层状主矿体顶板）中的构造破碎带内有独立金矿（化）体产出。喜山期中酸性，酸性岩脉也有不同程度的金矿化。不同产状金矿化持征，矿石ω（Au)/ω（Ag)比值等综合分析后认为：甲马矿区存在两期金矿化，即燕山期海底喷流积成矿作用中的伴生金矿化和与喜山期岩浆作用密切相关的热液型金矿化。
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| 关 键 词： | 海底喷流沉积 铜多金属矿床 西藏 构造破碎带 成矿作用 自然金 金矿化 |
| 文章编号： | 1671-5888(2002)03-0225-04 |
| 修稿时间： | 2001年12月4日 |
SUPERIMPOSED MINERALIZATION OF GOLD IN JIAMA COPPER- POLYMETALLIC DEPOSIT, TIBET |
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| REN Yun sheng ,SU Deng kui ,ZHANG Jin shu.SUPERIMPOSED MINERALIZATION OF GOLD IN JIAMA COPPER- POLYMETALLIC DEPOSIT, TIBET[J].Journal of Jilin Unviersity:Earth Science Edition,2002,32(3):225-228. |
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| Authors: | REN Yun sheng SU Deng kui ZHANG Jin shu |
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| Institution: | REN Yun sheng 1,SU Deng kui 2,ZHANG Jin shu 2 |
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| Abstract: | Gold content in various types of ores is high in Jiama deposit, Tibet. Gold in stratiform major orebody is mainly included in bornite and tetrahedrite as fine grain of native gold. Independent gold orebody or mineralization can be found in structural fracture zones in marble of the Duodigou formation, which overlies stratiform major orebody. Acid and middle-acid dykes of Himalaya period are mineralized. The evidence both from gold mineralization in different occurrence and value of Au/Ag in various ores indicate that Jiama deposit was undergone two stages of gold mineralization. One was caused by submarine sedimentation-exhalation in the Yanshania period. The other is closely relative to magmatism in the Himalaya period. |
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| Keywords: | submarine sedimentation-exhalation superimposed mineralization Jiama copper-polymetallic deposit Tibet |
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